I know I know...strange question. I have 2 EE in my flock, Mercedes is the oldest, at almost 7 y.o., and Silver is only 3 y.o. Mercedes has always laid a lovely gorgeous greenish-blue egg. Silver has not....I have only ever seen her lay brown eggs. So, I said ok... fine, I have a brown egg laying EE. Sigh I actually saw the egg pop out so I know Silver was laying brown ones. Well, the last 2 weeks, almost EVERY DAY I have gotten 2 EE green-blue eggs in the nest. We have had 6-7 eggs of 7 girls, and of them by night fall there are like 2 green-blue eggs in the nest. Not every time mind you, but enough to make me tear my hair out trying to figure out what is going on. I cannot seem to find if Mercedes is working over time cos I have given them very good treats etc lately, or if Silver finally decided to drive me insane and lay colored eggs. So whatchathink? Can EE eggs change colours over time? Am I going crazy from these two hard headed chickens? IT IS A MYSTERY!!!!!